An earthquake with a preliminary magnitude of 7.6 hit north central Japan on Monday, public broadcaster NHK said.
The Japan Meteorological Agency issued a tsunami warning along western coastal regions of Ishikawa, Niigata and Toyama prefectures.
Tsunami of up to 5 meters high are believed to be reaching Noto in Ishikawa Prefecture, according to the weather agency.
Waves more than 1 meter high hit the coast of Wajima City in Ishikawa Prefecture, NHK reported.
Japan’s nuclear power plants
Hokuriku Electric Power said it is checking for any irregularities at its nuclear power plants, NHK reported.
Another earthquake warning was issued.
Tsunami of 40 centimeters was recorded at Kashizawaki City in Niigata Prefecture.
A spokesperson for Kansai Electric Power said there were currently no abnormalities at its nuclear power plants but the company was monitoring the situation closely.
South Korea’s meteorological agency said on Monday the sea level in some parts of the Gangwon province on the east coast may rise after an earthquake with a preliminary magnitude of 7.6 hit north central Japan.